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→History View
Coalescing redirects will be an optional portion of history queries, so callers can get the raw visit data if desired.
When the history system gives query results by visit, we will hide the sources of redirects and only show destinations. For all visits X that result in redirects to Y, we will remove X and add Y (if Y isn't already in the result set). Then repeat this opertaion operation until there are no redirected visits (to handle multiple redirect hops)
This handles many cases: multiple redirected destinations from X, mutiple redirect sources from Y. It also means that if you do a query and it matches the source, you'll get the destionation even if the query doesn't match the destination. There are some strange results, however:
